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Finding the Fourth Proportional to 15,897.40, 23,856.90 and 8,877.40

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Solution

The fourth proportional to 15,897.40, 23,856.90 and 8,877.40 is: 13,322.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,897.40 : 23,856.90 = 8,877.40 : x
  2. Step 2: Convert to fraction form
    15,897.40/23,856.90 = 8,877.40/x
  3. Step 3: Cross multiply
    15,897.40x = 23,856.90 × 8,877.40
  4. Step 4: Simplify right side
    15,897.40x = 211,787,244.06
  5. Step 5: Solve for x
    x = 211,787,244.06/15,897.40
  6. Step 6: Final answer
    x = 13,322.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.